New Medicare formula: RVU x GAF x CF = ?
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Fee Schedules↗
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The RVU review and revenue neutrality.
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Fees, Dental↗
The RVU study and specialists. Relative Value Units.
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Endodontics↗
Relative value units correlate with pediatric surgeons' operating time: when perceived myth becomes reality.
PURPOSE: In 1992, the Congress implemented a Medicare payment system based on relative value units (RVUs). Today, RVUs are increasingly used to determine surgeon reimbursement from Medicare, Medicaid, and private third-party payers. We questioned whether current RVU assignments accurately reflect the quantity of time that surgeons spend operating. METHODS: Over a 12-month period, 59 common pediatric operations were identified and classified as general surgery (n = 34), urology (n = 13), or minimally invasive (n = 10). Only operations performed as an outpatient or requiring less than one inpatient day of direct surgeon involvement were included. By regression analysis, correlation coefficients were generated comparing average operating time per procedure to the corresponding RVU generated. RESULTS: Of 59 specific operations, a total of 744 general surgery cases, 1155 urological cases, and 370 minimally invasive cases were performed. RVU efficiency was greatest in general surgery (1 RVU = 5.18 operating minutes), followed by minimally invasive operations (1 RVU = 6.80 minutes) and urological operations (1 RVU = 8.59 minutes). Regression analysis proved minimally invasive operations to correlate best with RVUs with R2 = 0.8376, followed by urology at R2 = 0.6753, and then general surgery at R2 = 0.649. CONCLUSIONS: The RVU has emerged as the most dominant factor influencing reimbursement of practicing pediatric surgeons. Despite common surgeon bias, RVUs do correlate with current operating times. These data prove important as surgeons analyze cost, negotiate contracts, and strategically plan for fiscal success.
Child↗
Productivity of radiologists: estimates based on analysis of relative value units.
Analysis of relative value units (RVUs) was used to quantify patient-care productivity of radiologists in 19 multispecialty group practices and to determine how productivity is affected by certain characteristics of the practices. The RVUs used in this study are the professional component RVUs developed by the American College of Radiology and the Health Care Financing Administration and published as the Radiology Relative Value Scale. An RVU workload was calculated by multiplying the number of times each procedure was performed by the procedure's corresponding RVU; the sum of these products gave the overall professional RVU workload. Five productivity indexes were calculated. The physician index denotes the ratio of the total number of physicians in the clinics to the total number of radiologists. The availability index denotes the fraction of radiologists who are available to perform clinical work after deductions are made for time away from clinical work. The difficulty index measures, in RVUs per examination, the level of complexity of the overall examination mix. The examination index measures examinations per available radiologist, and the RVU index measures RVUs per available radiologist. Altogether, the 19 clinics reported 3,234,451 examinations performed by 299 radiologists. The computed overall indexes were as follows: physician index = 20 physicians per radiologist; availability index = 0.77; difficulty index = 2.27 RVUs per examination; examination index = 14,098 examinations per year per available radiologist; RVU index = 32,065 RVUs per year per available radiologist. When the clinics were grouped according to characteristics of the practices, the RVU index was higher for single-site practices, high-prepaid practices, outpatient-only practices, and practices without radiology training programs. Fifty-two percent of the RVUs were in general radiology, 37% in sectional imaging, and 10% in special procedures. The concept of RVU workload is timely because it undoubtedly will be used to compare workloads across medical subspecialties, and these workloads are likely to be related by third-party payers to compensation.
Ambulatory Care↗
Visit-level acuity and resource-based relative value unit utilization in a pediatric emergency department.
OBJECTIVE: There is currently limited data on the distribution of evaluation and management (E&M) codes and resource utilization in pediatric emergency departments. We sought to ascertain the following: (1) the distribution of visit-level acuity among patients who sought care in our pediatric emergency department (PED); (2) mean relative value units per physician hour (RVUs/h) as a measure of health care provider productivity; (3) the extent of correlation between the mean number of patients seen per hour and RVUs/h; and (4) the difference in RVU's generated using observation codes versus a higher level E&M code for diagnoses that require an extended level of service. DESIGN/METHODS: The study was conducted at an urban tertiary level, university-affiliated PED in a freestanding children's hospital. After obtaining data from patient encounters during the period from January through December 2004, we calculated total RVUs by using 2004 national Medicare data that pertained to facility coding, adjusted for data from Tennessee. We also reviewed the frequency of 3 diagnoses that usually require extended care to determine disposition (status asthmaticus [International Classification of Disease-9 Diagnosis Code 493.91], volume depletion [276.5], and sickle cell disease with crisis [282.62]). Utilizing a high-level E&M code (99285) and high-level, same day observation code (99236), we compared RVUs generated for each of the earlier said diagnoses. RESULTS: During the study period, 61,444 patient encounters occurred. Of the patients seen, 4678 (7.6%) were admitted. The most common E&M code used was 99283 (53.7%). The mean RVU's/h for pediatric emergency medicine physicians and for pediatricians (and nurse practitioners) were 4.36 and 3.08, respectively. There was high correlation between RVU's/h and the number of patients seen per hour (r = 0.85). The cumulative frequency of the 3 diagnoses that required extended care was 2602. Total RVUs generated when the high-level E&M code 99285 and the high-level observation code 99236 were used was 10,408 and 15,143, respectively. CONCLUSIONS: Our descriptive study provides PED benchmarking data on E&M code distribution and RVU utilization. RVU's/h may serve as a reliable measure of productivity. Although the use of observational codes in the PED requires additional documentation, their use for select diagnoses may appropriately reflect the level of service and have a favorable impact on the total number of RVU's generated.
Child↗
Is Adam worth more than Eve? The financial impact of gender bias in the federal reimbursement of gynecological procedures.
PURPOSE: On January 1, 1992, Congress implemented a Medicare payment system based on relative value units (RVU). The RVU multiplied by a dollar conversion factor sets the reimbursement for all procedures covered by Medicare and many other private insurers. This study was undertaken to evaluate discrepancies in federal reimbursement for gender-specific procedures. METHODS: Using the December 1995 Federal Register and the regional Medicare conversion factor ($40.08/RVU), we compared the work RVU and total reimbursement of 24 groups of gender-specific surgical procedures. The groups were matched as carefully as possible so that the amount of work and level of difficulty would be similar, if not identical. Some examples of comparisons are as follows: biopsy of male vs female genitals, hysterectomy vs prostatectomy, staging for ovarian vs testicular cancer, and exenteration for cervical vs prostate cancer. RESULTS: In the 24 matched procedures, the male-specific procedures were reimbursed at a higher amount in 19 (79%) cases. The female-specific procedures were reimbursed at a higher amount in 3 (12%) cases (P = 0.004). There was no difference in reimbursement for two of the comparisons. Overall, we found that male-specific procedures are reimbursed at an amount which is 44% higher than female-specific procedures. Comparison of work RVU revealed that male-specific procedures were assigned higher values in 19 cases and, overall, male gender-related surgeries had work RVU that were 50% higher than female gender-related surgeries. CONCLUSION: There is significant gender bias against the Medicare reimbursement of female-specific services. This results in a lower net reimbursement for gynecologic procedures. In addition, since many private sector insurance carriers now use the resource-based relative value scale system, this gender bias is further potentiated.
Female↗
[Efficacy in endoscopic treatment of secondary vesicoureteral reflux with polydimethylsiloxane].
OBJECTIVE: To value the efficacy in endoscopic treatment of the vesicoureteral reflux (VUR). MATERIAL AND METHOD: We have realized a prospective study in patients with RVU treated with endoscopic polydimethylsiloxane, from January 1999 until December 2001, analyzing the results after an average pursuit of 30 months. We included 144 patients, 92 girls and 52 children, with 213 VUR (124 primary ones and 89 of secondary etiology). The initial efficacy of the treatment was defined as the finished absence of RVU in the isotopic cystography, realized three months after the puncture. RESULTS: The global efficacy of the endoscopic treatment in secondary etiology reflux was lower than the reached one in the treatment of the primary RVU (77.7% against 86.2%) but the differences did not reach statistical significance (p=0,226). We do not also find significant differences on having compared the injected volume and the valuation of resolution of the ebb between the different causes of secondary RVU (p=0.361). We found recurrence in patients with RVU due to lower urinary tract dysfunction (4.34%). CONCLUSIONS: Endoscopic treatment of the secondary VUR is a minimally invasive skill, presents scarce morbidity and it is effective in chosen patients. The risk of a long term recurrence is grater in VUR secondary to functional alterations (neurogenic bladder and functional instability), for what, pursuit has to be established according to the base pathology.
Adolescent↗
[Analyzing the evolution of a Pharmacy Department using a relative value unit system].
INTRODUCTION: This study proposes the use of relative value units (RVU) as a clinical management tool to evaluate departmental services. OBJECTIVES: To measure productivity from 2000 to 2002 by estimating RVU. To determine RVU cost in constant Euros and evaluate system efficiency during this period of time. METHODS: Retrospective, observational study of a pharmacy department s production. RVU assigned to each activity have been obtained from a standardized document drawn up by the Sociedad Española de Farmacia Hospitalaria. Cost of each RVU was determined based on total cost assigned to the pharmacy department and the total number of RVUs produced. RESULTS: Drug dispensation activities account for 76% of the total production, followed by elaboration activities (21%). CONCLUSIONS: Productivity in our department has increased 46.48% in this period of time, while efficiency has increased by 23.8%.
Costs and Cost Analysis↗
Comparison between indicators for the measurement of radiology activity volumes (Italy-USA).
PURPOSE: Different evaluation systems and indicators have recently been used to measure the activity volumes of Italian hospital departments, and in particular of Diagnostic Imaging Units. These measurements have mostly been based on more or less complex and repeatable indicators such as total accesses, accesses per imaging modality, type and number of exams. The aim of this study was to compare four models for measuring and evaluating productivity to assess their features and propose a common method for measuring activity volumes in a Diagnostic Imaging Unit. The models considered are: a) the numerical count, b) the model proposed by SNR-SAGO-SIRM, c) the model based on transfer prices in use in the Emilia Romagna Region (RER), d) the model used by the U.S. Health Care Financing Agency (HCFA-USA), based on a complex system of weights named RVUs (Relative Value Units). MATERIALS AND METHODS: The period under review considers two years of activity (2000-2001) at our Diagnostic Imaging Unit. The data were collected by grouping the radiological procedures into homogeneous groups (macroaggregates) which were then assessed with the four models. The reference parameters considered in order to produce homogeneous data were: the number of procedures per physician hour, the score per hour according to the SNR-SAGO-SIRM model, the score per hour according to the RER model, the number of work-RVUs per hour worked. With regard to the HCFA-USA system, the following indicators were used: the work component (work-RVU), the insurance component (malpractice RVU) and the technical component (practice expense-RVU), the equivalent units of physician time (FTE: Full Time Equivalent), such as the number of procedures per FTE, the difficulty index, and the number of RVUs per FTE. RESULTS: a) The total number of procedures was 55,884, the number of procedures per hour ranged from 2.43 (August 2000) to 4.20 (March 2000); based on the numerical count conventional radiology accounted for the most of the Unit's activity (40%). b) The total score according to the SNR-SAGO-SIRM model was 147,358; the weight of each physician hour ranged from 6.37 (August 2000) to 9.80 (October 2001). The SNR-SAGO-SIRM model indicates that the most significant macroaggregate in the Unit's activity was ultrasound (42%). c) The total score according to the RER model was 4,313,047, the weight of each physician hour varied between 159 (August 2000) and 316 (April 2000). Based on the RER model, CT (42%) accounted for most of the Unit's activity. d) According to the RVU model, the total number of work-RVUs was 37,619, and the physician weight per hour ranged from 1.45 (August 2000) to 2.86 (March 2000). The predominant method was ultrasound (35%); the number of total practice expense-RVUs was 192,749; the month with the highest score was March 2000 (9,398), while the one with the lowest score was August 2000 (4,710); the total number of malpractice RVUs was 9,940, and the months with the highest scores were April 2000 (487) and March 2000 (487), while the month with the lowest score was August 2000 (243), and the modality carrying the highest insurance risks was MRI (38%). We also calculated the number of procedures per FTE (6,141), the number of work-RVUs per FTE (4,134); the difficulty index resulting from the ratio between work-RVUs and number of procedures (0.67); the number of work-RVUs per hour worked (3.06). CONCLUSIONS: Based on the numerical count, conventional radiology and ultrasound play a predominant role (40% and 34%, respectively, total 74%). This approach therefore fails to reflect the weight of more technologically advanced procedures. The SNR-SAGO-SIRM model gives adequate importance to the combination ''number- weight of patients'' among the macroaggregates analysed. The RER model rewards the use of more expensive technologies, as it assesses the overall weight of the service and not only the weight of the radiologist's activity. The RVU model, with its distribution of weights, differentiates the different work, cost, and insurance components of the macroaggregates. It also introduces an important aspect that is new to our professional and scientific culture: evaluation of the ''insurance component'', whose role will become increasingly important in Italy. The difficulty index (work-RVUs/no. of procedures), which expresses the ratio between the number of modalities and their complexity, is particularly interesting. This index, adjusted to reflect the Italian situation, might help to assess the true technological and scientific content of the department's activity.
Diagnostic Imaging↗
Two methods for allocating pharmacy cost per patient case.
The consequences of two different methods of allocating pharmacy costs per patient case were studied. The study was conducted using cost data from Sunnybrook Health Science Centre (SHSC), a 1205-bed teaching hospital in Toronto, Canada. A sample of the 1991-1992 cases for the three case mix groups (CMGs) with the highest total pharmacy cost and the three CMGs with the highest pharmacy cost per case were examined. Information was obtained from patient records and used to produce two sets of data: pharmacy prescription unit costs and pharmacy costs per case using the relative value unit (RVU) method, and pharmacy prescription unit costs and pharmacy costs per case using the workload measurement system (WMS) method. For each case, the difference between the RVU and WMS pharmacy costs was determined. The RVU method consistently produced higher pharmacy costs per case for the CMGs with the highest pharmacy cost per case. If these CMGs are typical of other CMGs with high pharmacy costs per case, then case reimbursement based on the WMS method of cost allocation would result in underfunding of hospitals whose case mix has a high proportion of CMGs with high pharmacy costs per case and overfunding of hospitals whose case mix has a high proportion of CMGs with low pharmacy costs per case. However, the RVU method of cost allocation, although it appears to be more accurate, places a greater data collection burden on pharmacy managers. The RVU and WMS methods of pharmacy cost allocation gave significantly different pharmacy costs per case for the six CMGs studied.
Cost Allocation↗
Comparison of 1997 Medicare relative value units for gender-specific procedures: is Adam still worth more than Eve?
BACKGROUND: On January 1, 1992, Congress implemented a Medicare payment system based on relative value units (RVUs). The total RVU (which is made up of work, practice, and malpractice RVUs) is multiplied by a dollar conversion factor to set the reimbursement for all procedures covered by Medicare. In a previous study, we found that significant gender bias exists in Medicare reimbursement for female-specific services. Recently, HCFA approved increases (beginning January 1997) in the work RVU for many gynecologic procedures. This study was undertaken to compare work and total RVUs for gender-specific procedures effective January 1, 1997. METHODS: Using the May 1996 Federal Register, we compared work and total RVUs for 24 pairs of gender-specific procedures. The groups were matched so that the amount of work and level of difficulty would be similar, if not identical. We validated our selection of procedures for comparison by also evaluating the average time required to perform these procedures. RESULTS: Comparison of work RVUs for the 24 paired procedures revealed that in 19 cases (80%), male-specific procedures had a higher RVU; in 3 cases (12%), female-specific procedures were higher; and in 2 cases, there was no difference. On average, work RVUs were 49% higher for urologic procedures than for gynecologic procedures. Comparison of total RVUs revealed that in 20 cases (83%), urologic procedures had a higher total RVU and in 3 cases (12%), gynecologic procedures were higher. On average, male-specific surgeries are reimbursed at an amount which is 37% higher than that for female-specific surgeries. CONCLUSION: Recent increases in work RVUs for many gynecologic procedures have resulted in improved reimbursement. However, even with these improvements, significant gender bias still exists in the Medicare reimbursement of female-specific procedures. This gender bias is further magnified as more private insurance carriers use the system to set reimbursement.
Female↗
Vascular surgery and the Resource-based Relative Value Scale five-year review.
PURPOSE: The first 5-year review of the Medicare Resource-based Relative Value Scale (RBRVS) work values (RVUs) began in 1995, and adjustments became effective January 1, 1997. This report summarizes the methods used by The Society for Vascular Surgery (SVS) and the International Society for Cardiovascular Surgery, North American Chapter, (ISCVS-NA) Joint Council Government Relations Committee (GRC) to evaluate vascular surgery work RVUs and the results that were achieved. METHODS: The GRC performed a work study to determine accurate skin-to-skin operative times for typical vascular and nonvascular operations. These were compared with the original Harvard/Hsiao time estimates and intraservice work per unit time (IWPUT) values that had been used to determine work RVUs. For most vascular procedures the current operative times were longer than the original Harvard estimates, resulting in calculated IWPUTs substantially less than the Harvard values. This lack of correspondence was not identified in the nonvascular procedures, where operating room times and IWPUT values were more consistent with Harvard data. These study results were then used to support compelling evidence arguments in a petition to the Health Care Financing Administration (HCFA) that identified vascular surgery as being undervalued in the RBRVS. Nine commonly performed vascular procedures were cited for review in the 5-year update, and five distinct work analysis methods were used to justify each recommended RVU increase. These techniques included a standardized survey from the American Medical Association (AMA)/Specialty Society Relative Value Update Committee (RUC), a work calculation using accurate intraservice times and appropriate IWPUT values, and an evaluation and management (E&M) building-block approach. RESULTS: The RUC met throughout 1995 to assess codes submitted for review, and recommendations were forwarded to HCFA. The Notice of Proposed Rule Making (NPRM), which contained HCFA's preliminary RVU determinations, was released in May 1996. RVU increases from 11.5% to 44.6% were proposed for the nine vascular services cited by the SVS/ISCVS-NA. Also included were two increases and two reductions in less-common vascular operations. Of far greater overall fiscal import, HCFA proposed substantial increases in the work RVU for all E&M except that performed within global surgical packages. The SVS/ISCVS and most other surgical societies appealed HCFA's proposal regarding E&M. The Final Rule for the 1997 Medicare Fee Schedule was published late in 1996. CONCLUSIONS: The Final Rule upheld the 11 vascular work value improvements and the E&M increases that excluded global service packages. Because most surgical E&M is performed within 10- or 90-day global periods, the E&M ruling will produce an estimated annual $2.5 billion shift from surgical to nonsurgical specialties. Because the overall fiscal impact of the 5-year review was mandated to be budget-neutral, HCFA imposed an 8.3% reduction in the work payment of every service in Part B of the Medicare program, primarily to compensate for the increased nonsurgical E&M payments. The net fiscal impact of the 5-year review for vascular surgery has been estimated at +0.5%.
Centers for Medicare and Medicaid Services, U.S.↗
CPT coding by interventional radiologists: accuracy and implications.
PURPOSE: To evaluate the accuracy of Current Procedural Terminology (CPT) coding for interventional radiology services when coding is performed by the operating physician. MATERIALS AND METHODS: Coding data for 1,174 interventional radiology encounters in 736 patients were analyzed for appropriate use of CPT codes. Physician operators initially assigned provisional codes. Formal coding for billing purposes was performed at a later date by one of two experienced interventional radiology physician coders. Initial operator coding errors and associated relative value unit (RVU) impact were analyzed. The coding patterns of experienced physician coders were compared with those of the other interventionalists. RESULTS: Only 82% of encounters were initially coded correctly, with a small net tendency toward undercoding. The overall net RVU impact of errors was only -1.2%, with the effects of undercoding outweighing those of overcoding. More complex cases (> or =4 CPT codes) were much more likely to be coded erroneously than less complex cases (24% vs 14%, P <.001). Experienced physician coders committed significantly fewer errors than other physicians (10% vs 25%, P <.001), but there was a similar minimal net RVU impact of errors (-1.1% vs -1.4%, P =.198). CONCLUSION: Although initial physician coding errors for interventional radiology procedures are common, the net RVU impact is minimal. The accuracy of experienced physician coders is significantly higher than that for other interventionalists. Because of the regulatory consequences of coding inaccuracies, practices should establish quality improvement systems to minimize errors and use the skills of experienced individuals in their coding processes.
Forms and Records Control↗
Nationwide trends in rates of utilization of noninvasive diagnostic imaging among the Medicare population between 1993 and 1999.
PURPOSE: To determine current utilization rates and recent nationwide trends for noninvasive diagnostic imaging (NDI) among the Medicare population. MATERIALS AND METHODS: Medicare Part B claims data files from 1993, 1996, and 1999 were analyzed for all procedure codes related to NDI. NDI codes were grouped into 22 imaging categories, as well as seven imaging modality groups. The data were analyzed to determine the overall nationwide utilization and relative value unit (RVU) volume and rates and changes in utilization rates and RVU rates between 1993 and 1999 for the Medicare fee-for-service population, which included approximately 33 million enrollees per year. RESULTS: The overall utilization rate for all NDI in 1999 was 324,974 examinations per 100,000 enrollees. Conventional radiography was the most utilized imaging technology (55.5%), followed by ultrasonography (US) (20.5%), computed tomography (CT) (8.8%), mammography (6.0%), nuclear imaging (5.2%), magnetic resonance (MR) imaging (2.6%), and bone densitometry (1.5%) (percentages do not add up to 100% due to rounding). In the 6-year interval from 1993 to 1999, the rate of NDI utilization increased 3.8%. The utilization rate for conventional radiography decreased 13.7%, while that of all other modalities increased a combined total of 39.1%. During this 6-year period, RVU rates per 100,000 increased 14.6%, with RVUs for MR imaging increasing 76.6%; those for nuclear imaging, 38.7%; those for CT, 28.3%; and those for US, 24.2%. CONCLUSION: A 3.8% increase in the rate of NDI utilization occurred during the 6-year period between 1993 and 1999. A considerably larger increase in RVU rates (14.6%) occurred during the same time period.
Diagnostic Imaging↗
[Approximation to cost analysis of various types of hemodialysis using relative value units].
Hemodialysis sessions performed in Hospital Units have a different degree of complexity depending on the kind of patients who is receiving this treatment. This paper's aim is to apply certain weighting factors, which measure the complexity of each type of session performed, and so allow a more realistic comparison with hemodialysis sessions performed in dialysis Units. The various costs of the Castellón General Hospital Dialysis Unit were calculated. Five types of Hospital-performed sessions were defined, to which were applied concrete weighting factors called Relative Value Units (RVU). These took account of health professionals' time, disposable material and drug expenses. The cost of single hemodialysis session, before the RVU calculation was added, was 28,549 pesetas (171.58 Eu.). Thirty-two per cent of the cost was from disposable material, 29.38% for cost of health professionals time, 18.54% for structural costs, 13.4% for drug expenses, and 5.73% for the nephrologists' time. When RVU were applied, the Type I session cost (chronic renal failure patients on regular hemodialysis), was 28,882 pesetas (149.54 Eu.). As the complexity of the procedure increased, up to the Type V session (acute renal failure patients in intensive Care Units), the costs also rose to 68,448 pesetas (411.38 Eu.). We conclude that weighing the different types of hemodialysis sessions by means of RVU, allows a better measurement of the costs and achieves a more accurate comparison with others hemodialysis units.
Costs and Cost Analysis↗
[Complexity index and analysis of digestive endoscopies at a university hospital].
BACKGROUND: In Spain neither the cost of digestive endoscopies nor the complexity index (CI) have been objectively estimated. Consequently, the profitability of an endoscopy unit cannot be evaluated. OBJECTIVES: 1: To classify endoscopies according to the time taken to accomplish them in order to estimate the CI and determine the relative value unit (RVU). 2: To evaluate the cost of each examination in order to determine the profitability of endoscopy as a diagnostic and therapeutic tool. 3: To measure unnecessary delays in examinations and to determine whether there are differences in the time an examination takes according to the endoscopist's experience and the patient's age or sex. MATERIAL AND METHODS: The cost per hour of an endoscopy room was estimated by dividing the cost per year of employees, equipment, maintenance and the hospital's general costs between the hours of work per year of the endoscopy team. The time taken to perform endoscopies was estimated and the result was used to calculate the RVI, the CI and the cost of 500 consecutive endoscopies. RESULTS: The annual cost amounted to 349,617.69 E. Staffing costs represented 65.5%, of which 56.3% were direct costs. Gastroscopy was taken as the RVU (cost = 27.52 E). Anoscopy was the simplest procedure (RVU = 0.61, cost = 15.08 E) and colonoscopy plus polypectomy was the most complex procedure (RVU = 4.41, cost = 74.28 E). The greater the experience of the member of staff performing the procedure, the less time it took (p < 0.01). CONCLUSION: CI was lowest for anoscopy (URV = 0.61) and highest for total colonoscopy plus polypectomy (URV = 4.41). Cost and exploration time depended on the endoscopist's experience. Staff represented the highest percentage of cost.
Costs and Cost Analysis↗